Diamondbacks Summer Trade Block

Despite our record, the Arizona Diamondbacks don’t have many pieces we’re willing to move.  We’ve already cleaned house and only have a few spare parts available.  Looking for low-level/rookie-league type players in return, though some of these are easier for me to move than others.  None of these players are making more than $1.3M (except of course for you-know-who).  Contact via Slack is preferred.
SP Robert Carson: Solid but unspectacular lefty; if you’re covering for an injury in the rotation, or want a long-relief type, here he is.
Bullpen pieces: Erik Cordier (power-arm), Mark Montgomery (power-arm), Amir Garrett (lefty), David Phelps (innings-eater).
Bench bats/gloves: IF Andrelton Simmons (superior defense, improving bat), corner-IF/OF Kyle Greene (LH-bat, versatile defensive sub), OF Jared Mitchell (LH power-bat, can play all three OF positions well), OF Wagner Mateo (LH-bat, can play all three OF positions).
P.S. Attention Shoppers: P Josh Beckett is also available!  He’s on the All Star ballot and is requesting a trade, so … you know … operators are standing by and stuff. :D